Many plants from this class conjure frightening images for earthlings, resembling thick knots of gigantic pulsing veins crisscrossing the countryside. The comparison is apt, for this vinelike clade has developed to transport fluids along their lengths. This ability means populations need not depend on nearby water sources but can siphon off each other. Some species maintain a tight distribution, twisting along in ropey bundles from rich water sources; others spread out wide, stretching over miles and often functioning as the water source for an entire ecology. Whatever the case, the physiological mechanisms involved in erepofursian fluid transport is fascinating for xenobotanists.

Representative Genera:
Bankvine (camarankylus)

This riverside resident retains a clearly segmented structure along its length, a hint to the cooperative nature of its ancestors. Each section sends several thin chutes to anchor itself into the bank, adding both to the strength of its hold in what can be a swift current and to the stability of the bank itself; it also serves as a safe hiding place for skittish swimmers. Colors of different species vary in shades of red, with darker colors appearing on those few species that can survive in almost complete submersion, and dead sections slough off to float downstream before settling below.


Musselmat (durophyllus)

Part of a class known for bearing leafy projections along the length of the vine, musselmat differs in that its 'leaves' are rigid cupped structures that grow in pairs, creating a chamber between them to house and protect the seeds within. Fauna that wants these seeds as a food source have to deal with the strong elastic fibers holding the seed chamber closed. At periods of high tide after cold seasons these chambers will open to release their seeds to be spread through the water. This method of reproduction is different from ancestral strategies, which employed a method more akin to budding.


Quetzal Vine (pluvius)

By far the most colorful genus of the phylum, this tropical epiphyte displays its photosynthetic 'plumage' on long feathery extensions from its dark, olive colored vine. Nobody is sure about the purpose of these colors; some speculate that they are used to attract pollinators, while others surmise that the purpose is to deflect unwanted spectra of light. All agree that the vine is a powerful parasite, siphoning water and nutrients from host trees through long piercing roots. As the vine grows in length these roots break off periodically to be replaced by roots in fresh new areas.


Waterfleece (aquaterius)

In structures very similar to the kelp forests of Earth, waterfleece form thick columns that dance and sway in shallow ocean waters. They are much larger than their sea slough cousins, with long, golden membranes called pennants that billow like bundles of flags in the current. Waterfleece serves as a habitat for several species of swimmers, which function as pollinators between organisms and help mature pennants to detach and drift away, carried by air filled sacs located at the base until osmosis neutralizes the buoyancy. This pattern of reproduction represents the pinnacle of erepofursian sophistication and foreshadows the methods of truly amazing descendant clades.


Avanyu Sog (avanius)

By far the most famous phleboxulon, thanks to the vast surface area it occupies, sog is often considered the dominant form of macroscopic nereid life. Avanyu sog is one of the most prolific types, covering the landscape in various regions. Drawing from rain, lakes, or aquafers, spongy chambers within the vines swell with moisture, causing an inexorable osmotic creep that, aided by pulsating pseudomuscular tissue, transfers water along the tangled network of vines to more parched areas at prodigious rates. Thanks to this system of natural irrigation, organisms that would otherwise perish in the dry season are able to flourish.


Feathermat (crassitextilus)

This thick weave of plants braves the cold subpolar and alpine regions of the world. Downy protrusions along the plants' lengths are coated with oil that not only keeps external surfaces dry but lowers the freezing point of internal fluids; pale red coloration helps to protect them from surprisingly harsh insolation as well. Despite these adaptations, great swaths of feathermat can be caught in permafrost, forming a layer of dead, frozen plant material which hardier nereophytes use as a nutrient source. Even in death, feathermat contributes to its harsh and unforgiving home.


Sea Slough (lama)

The coastal areas of Nereus are littered with ragged mats of these bronze colored vines, which cluster on beachfronts where vital nutrients are trapped below the sand. Part of a group known as the Nocamerids, sea slough produces its 'leaves' with tiny pockets of air within, generating enough overall buoyancy to keep enough of the organism afloat during high tides so it can make the most of the sunlight it receives. Given time and enough exposure to dry conditions, these floating protrusions will break loose, drifting on the waves to hopefully land and deposit seeds in a fertile new home.